Democrat presidential, Barack Obama candidate is expected to win the primary in South Carolina with a record turnout of more than 300,000.
A Reuters/C-SPAN/Zogby poll showed Obama with 41 percent of the votes and rivals Hilary Clinton and John Edwards with 26 percent and 19 percent respectively.
The win is required to give Obama a realistic chance of victory as the candidates prepare for "Super Tuesday" on February 5th.